Metal-saw.



H. e. MILLER.

METAL SAW.

APPLICATION FILED FEB. a. 1904. RENEWED 00w. 5, 1908 Patented May 18, 1909.

mvamfoz 61 Hozuma H. G. MILLER.

METAL SAW.

APPLICATION FILED P318, 1904. EEEEwEn OUT. 5, 1903.

921,723 Patented May 18, 1909.

3 SHEETB8HEET 2.

31 1 vcwfoz H. G. MILLER.

METAL SAW. APPLICATION FILED VPEB. 8, 1904. RENEWED 00125, 1908. 921,723. Patented May 18, 1909.

3 SHEETS-SHEET 3. I

IIIIIIIIIIIHIHII mm struction as well as the function it is intended HARRY e. MILLER, OF DENVER, COLORADO, ASSIGNOR ro THE inLLnn Gwen-haw run TRIMMER COMPANY, DENVER Merlin-saw.

Specification oi! Letters Patent.

res nted tray is, isoa.

' ppl on fi ed e u y 8,1304, e a Npiaa'ma Een w e eetebe 5, lttt- S i -ti 556222- To all whom it may concern: I

Be it known that I, HABRY G. MILLER, a citizen of the United States of America, re.- siding at the city and county of-Denver and State of Colorado, have invented certainnew and useful Improvements in Metal-Saws; and I do declare the following to be a full,- clear, and exact description of the invention,

such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to. the letters and figures of reference marked thereon, which form a part of this specification.

My invention relates to improvementsin a novel construction of saw more especially intended for use for sawing metal as linotype slugs, but which may be employed for use in sawing all kinds of metal or other material.

This invention relates more especially or specifically to the means for manipulating t e table upon which the material to be acted on by the saw is mounted.

An improved feature of the invention con sists in the vertical adjustment of this table, whereby the material to be sawed, may be brought in pro er relation to the saw, or in the best ossi le position. It is found in practice t at the saw acts most advantageously, upon the material, when a horizontal plane passed through the axis of the saw, cuts the material in its vertical center.

An important object of this invention, is to provide mechanism for the adjustment of the table, whereby this relative position of the saw and the material to be acted on, may be quickly and easily brought about, regardless of the variation in the height of the material to be acted on.

Having briefly outlined my improved conto perform, I will proceed to describe the same in detail reference being made to the. accompanying drawing in which is illuS? tratedan embodiment thereof.

In this drawing, Figure 1 is a side elevation of the complete apparatus- Fig. 2 is atop or plan view of the same with the table partly roken away to disclose the mechanism underneath. Figs. 3 and 4 are front views of the apparatus, showing the table in two dif. ferent vertical positions with reference to the saw. Fig. 5 i atop view illustrating a pawl: iar arrangement of the saw for use in connection with certain work. Fig. 6 illustrates the 'llhe same reference c sa when the Petition shows 1 g 7 shows two bu tin P ec s o th coi an tion shown n Figher cter n ica e the s me pa t n. al t e vie s Le h numer l 5 de gn a ho p stal po wh h is s irlab r un a ket 0 supp r i g arela i ely sta ona y tab e 7 upon hi h s dably mou ed an a ha v table 8, o w i is secu ed a e p e 9 p vided, w a b 10 which is anew e cto' sse t an upon wh hi lnovably mounted a guide finger e te ding eng hwise f the ta e nd adapt d to eag th ma e ia o h ac e n one i le-v U on the oppqsiteside of the table'whieh I- w1l designate as 7, slidably mounted a,- straight edge 13, hav ng a slotted arm 13 hr ugh wh h a hu b cr w 14 P stas,

whereby the part- 13 which is adapted t'oengage the edge of the material opposite the finger 12, may be adjusted to force the material tightly against the straight edge previously to the beginning of the sawing opera tion. The distance of the straight edge 13, from the adjacent edge of the movable or auxiliary table part 8 determines the depth or amount of material to be out from the slugs or other material 15 to be acted on by the saw.

The bracket 0 provided were dove tailed groove which engages a tongue 5 of counterpart shape (see ig. 2) formed on the upper part of the pedestal 5. In a lug 6 formed on t r k is j u nal a ha 16 having a threaded portion 16*, which engages a threaded opening formed in a lug 17 integral with the pedestal 5. extremity of the shaft 16 is provided with a beveled gear 18 which meshes with a gear 19 fast on a horizontal shaft 20 journaled at one extremity in the bracket 6, and at the other extremity in a bracket 21 made fast to the relatively stationary part of the table '7. The outer extremity of the shaft 20, is provided with a crank 22, whereby the shafts 16 and 20, may be manipulated for the purpose of'raisiug and lowering the table upon the pedestal. To the outer extremity of the shaft 20 adjacent the crank, is secured a gage wheel 23, provided with a hub 23 which is fast to the shaft by a set screw or bolt 24. This gagewheel is graduated or subdivided into points-or portions of a pica The upper.

the latter being the unit of measurement ogra hical matters. Upon this gage ghee arep aced numerals designating points, and when the gage wheel is properly set, the

zero'mark is directly in line with a. mark on'the'adjacent end of the table (see Fig. 1).

, ;pointei mark 25 of the table. The wheel should then be secured to the shaft 26.

whenever it is desired to adjust the vertical os tion of thetable, the set screw should be oosehed, and the gage wheel adjusted to bring'the z'ero mark directly in line with the gag? Then as the shaft 20 is turned, the gage 4 will md cate the exact, elevation imparted to the table, in points or subdivisions ;;-.ofithe pica or typographical unit. As shown ,ini h drawing such 'relation to each other, that for every the gears 18 and 19 have rotation of the shaft 20, the screw shaft 16 will be given two revolutions; and the pitch of the threads 16 of the shafts 16, are so regulated with reference to the subdivisions or points indicated on the age wheel, that the userof the machine is a le to determine by the movement of the gage wheel, the exact vertical movement imparted to the table and through the instrumentality of the ,inechanism already described. In this way an alc'curate adjustment of the table may be obtained without difliculty and without the exercise of any particular skill or ingenuity. The shaft 26 on which the saw 29 is mounted and made fast, is journaled in two bearings 27'andf'28 formed integral with the pedestal 5. Upon the extremity of this'shaft remote from the-saw 29, is made fast an emery wheel 30; while intermediate the bearings 27 and 28, the shaft is provided with a pulley on-arbracket engaged by a belt 31 passing around a arger pulley 32 mounted on a shaft 33 journaled I 34 made fast to the. base of the edestal 5. Upon this shaft 33, are mounted i fa st andloose pulleys 35 of ordinary constriiction, and by means of which suitable form of motor,

, in the hollow of the pedestal,

' rib 10 engages the material in the rear,

ower may be communicated-or transmitte from any to the shaft 33 and thence to the saw shaft.

,In' the use and operation of my im roved construction, the material to be acte on by the saw the same being designated 15 in Figs. 3 and 4, is placed upon the movable or xauxiliary table part 8 and is forced against the finger 12 by the adjustable straight edge 13, the finger. 12 being adjusted by means of a set screw A to any extent required. The while the finger 12 engages it on one side. The table part '9 is then moved forwardly or toward the saw, and as the latter cuts the slugs 15, the severed parts drop downwardly removed by opening a door 5% in the base of the pedestal. Of course previously'to movin the material to engagement with the-saw,

the table is adjusted by turning the crank 22,

tact points.

andmay be the saw is in linewith the center of the so that the material as the slugs '15 is elevated to bring its vertical center, in the same plane with the axis of the saw for reasons heretofore explained. The movable table. part 9 may be secured to the stationary table part by a set screw B and by loosening this set screw the table part 9 maybe moved'back and forth on the main table part as will be readily understood. To the main table part is hinged a part 35*, whichinay be raised, as

the table7 is i-swered, to cause the saw shaft to project above or through the opening in the table. However, as the table is raised to a suflicient height, the 'iiiinged table part 35,

may be lowered to occupy a position above so the saw shaft and its bearings, thus closing the opening 1n the table if desired and con-' ceahng the saw shaft mechanism beneath.

In the sawing of some kinds of material,

it is desirablethat the sawed edges be formed 35 slightly concave as shown in Fig. 6 so that 1 when two of these abutting surfaces are brought together as shown in Fig. Z there will be a slight space between the outer-con- T his is for the purpose'of allowing the two parts to come together so that a perfectly tight joint may be formed on either of the surfaces corresponding'with the contact points of the pieces. Where these pieces are sawed on a perfectly straight line,

it is difficult to bring'these straight edges together without leaving a mark to indicate the division, because of slight particles of dust or dirt which usually adhere to the said contact edges. edges slightly curved as shown in Figs. 6 and 7, these particles of dirt or dust'will be either shoved or crowded into the central opening between the contact points, or

crowded beyond or outside of one of the surfaces adjacent the contact points. In any event a perfectly tight joint or perfect contact will be formed by the two abutting parts, whereby it becomes possible as in printin to make an impression whichdoes not indicate the joint.

angular position of the saw-would not be visible andis therefore not indicated in the other views.

Assuming that the parts shown in Figs. 6 and -7 are the same as the parts designated 15 in Figs. 3, 4 and 5, and further assuming that the said parts stand edgewise when acted on by the saw, and that the center of When the parts have their -10( In Figs. 5,'

these last named material to be acted pieces 15 when be curved as indicated in Figs. 6 and 7. In views the edges designated 15 correspond with the top and bottom edges of the parts 15 in Figs. 3, 4 and 5. The foregoing result is accom lished by arranging the boxes 28 and the s aft 26 so that the axis of the shaft forms oblique angles with the travel of the table part 8 carrying the on by the saw. Furthermore, in trimmin linotypeslugs, or the like, the rear end of t e saw has a tendency to kick the work out of position. Also, where trimmer knives or projections, as illustrated at 29", Fig. 5, are used, the rotating knives, as they move upwardly with the saw, will throw the slu s out of place. By placing the saw obliquely with the travel of the work table, the rear trimmer knives are thrown so far out of the line of travel of the slug that they do not hit the slug, and therefore do not tend to kickor throw the work out of the work holder.

Having thus described my invention, what .I claim is:

1. In a rotary saw mechanism, the combination with a support, of a table carried thereby and movable longitudinally, and a rotary saw set at an oblique angle to the direction of travel of said table.

'2. In a rotary saw mechanism, the combination with a support, of a table carried thereby and movable longitudinally, and a rotary saw mounted obliquely to the direction vof travel of said table and having'its axis parallel with the top of said table.

3. In a rotary saw mechanism, the combination with a sup ort adjustablevertically, of a table carried t ereby and movable longitudinally, and a fixed rotary saw arranged to standing edgewise, it is evldent that the surface cutiby the saw will diverge from said table in a direction from front to rear and havn g its axis parallel with the to of said table.

4. he combination with a support pro vided with bearings, of a shaft journaled in above the shaft thereby and movable longitudinally, a-rotary saw having trimmers projecting beyond the face thereof set at an oblique angle to the direction of travel of said table.

6. The combination with a support, of a saw-carrying shaft carried by the su port, a table mounted on the support, said s laft and table having the table being provided with an opening large enough to permit the shaft bearings to pass therethrough when the relative movement between the shaft and the table causes the shaft to roject beyond the top of the table, and a p ate ada ted to close said opening above the shaft w en the relative movement between the shaft and the plate causes the shaft to be below the table.

In testimony whereof I afiix my signature in presence of two witnesses.

HARRY G. MILLER.

' Witnesses:

DENA NELSON, A.'J. OBRIEN.

a relative vertical movement, 

